Saw set and jointer.



A. DUDGBON.

SAW SET AND JOINTER.

APPLIoA'rIoN FILED szPT.17.1913.

1,090,035, Patented Mar. 1o, 1914.

W/TNESSES ATTORNEYS ltl ADDELBEBT DUDGEON, 0F LATROBE, PENNSYLVANIA.

SAW SET AND JOINTER.

Specification of Letters Patent.

Patented Mar. 1t), 1191.4.

Application filed September 17, 1913. Serial No. 790,190.

To all whom it may concer/i.

Be it known that I, AoDnLnnR'r DUDGEON, a citizen ot' the United States,and a resident of Latrobe, in the county ot testmorelaud and State ot'Pennsylvania, have invented a new and Improved Saw Set and Jointer, otwhich the following is a full, clear, and exact descrilition.

My invention relates to improvements in saw sets and joiuters, and hasreiterence more particularly to a device comprising a member having abiturcated end adapted to engage a saw, and a` plunger carryii'ig atooth bit whereby the saw teeth are set.

An object ot the invention is to provide a simple, strong andinexpensive saw set and jointer which will set a number ol' teeth at atime, `in which Ythe tooth bit can set filiti'ei ent siaes ot saw teeth,and in which the mo tion ol' the setting tool is aiftjustable and which,also, adapted to receive a tile tor jointing the saw.

r,the invention consists oit the construction and combination oif partsto be more 'fully described hereinafter and fully set forth in theclaims.

Reference is to be had to the accompanying drawings forming a part ofthis specilication, in which .like characters indicate correspondinglparts in all the views and in which:

Figure l is a side elevation ot an embodi ment et' my invention; Fig. 2is a section on line QMQ, Fig. 3; Fig. 3 is a section on line 3 3, Fig.l; and Fig. 1t is an end view oitl the biiturcated end in the directionof the arrow Lishown in Fig.

Referring to the drawings, 5 represents the, `main body or member havinga bi'l'urcated end the portions t3 oft which are preferably circular andprovided with slots 7 in aliuemcnt and central 'with the main body. AThe main body has its other end S, which l is central with thebiturcated end, provided with a bore t), the upper portion l() oit whichis enlarged. The bore t) receives a plunger lll, one end ot whichprojects into the biit'urcated end and is slotted to receive, a toothbit 12, preferably rectangular shaped and made ot tungsten steel andsecured to the slotted end ot' the plunger by means of a screw til. Themain body is provided with a rece, 't-t which itforms a guide 'tor therectangular tooth bit l2. The tooth bit, which is formed on the blank,has its upper and lower edges slit, thereby forming rectangular-shapedteeth 15 which are alternately detlected in opposite directions. '.lhedistance between the slots on one edge being ditt'erent from thedistance between the slots on the opposite edge, the two edges will'torni diticrent numbers ot teeth, whereby ditterent sizes of saw teethcan be set.

'.lhe upper portion l0 of the bore receives a coil spring it engagingthe plunger 11. Bearing against the spring and engaging the plunger is aring 1T. lhe upper end of the plunger projecting out of the main body 5is threzuled and receives a nut 18 by means of which the tension of thespring lo can be varied, and, therefore, the distance between the nut i5and the collar 1t) on the end 8 ot the member 5 can be varied. TheVvariation of this distance regulates the set ting o'tl the teeth on thesaw, as will appear hereimi'tter. lfhe slotted ends 7 o't the main bodyreceive steel pins 20 in alinenient with each other and adapted to comein contact with the teeth ot the saw when the saw is set. See AFig. l.These slotted ends are also provided with al'ining apertures 2l adaptedto receive a triangular tile whereby the saw is jointed, as will appearhereinafter.

The use of my device is as itollows: A saw to be set is engaged by theslots T ot the biturcatcd end of the member o with the steel pins Q()resting on the top otf the teeth. rthe number ot teeth per inch on thesaw being known, a tooth bit having the same number ot teeth per inch isinserted 'from the sido into the slot ot the plunger 'il and secured tothe plunger by means el the screw 12S. The plunger is then placed in thebore 9, the spring it, the ring 1T and nut its', are placed on to thcplunger and the distance between the end and the collar it) ot the endot the member 5 is adjusted ti'or the desired degree ot setting. A\nykind ot a. support is then placed under the saw, and by striking theupper end olt the plunger, so as to make the nut strike the collar lt),the teeth are set, and the number ot teeth set per each blow depends onthe number of teeth on the tooth bit. A't'tcr cach blow the tool isadvanced through the number ot teeth set per blow. l t can be easilyseen that no special tool is necessary t'or maintaining the sawstraight` as the slots iu the bifurcated ends prevent the saw :t'rommoving. Fartlui'inore., iu view ol the 'tact that a number ol" teeth isset per blow` the setting is very rapid and unitorm, due to theadjustinent of the plunger motion and also the guiding` of the tooth bitby the main body.

When a saW is to be jointed, a triangular' le is itted into theapertures 21, as shown in `Fig. il, with the nut 1S screwed off, so asto let the teeth l5 of the tooth bit 12 come in engagement With the leand maintain the saine in proper position in the apertures 2l While thesau7 is jointed. See dotted lines in Fig. 2.

lt is understood that a number of tooth bits can be provided for a tool,so as to permit the setting of a large number of saws having a differentnumber of teeth per inch of length.

Having thus described my invention, l claim as new and desire to secureby Letters Patent:

l. In a device of the class described, a member having a bifurcated endadapted to engage a saw; a plunger in the member; a toothed bit in thebifurcated end carried by the plunger; means for maintaining saidplunger in a predetermined position; and means for varying the length ofthe plungers motion.

2. ln a device of the class described, a member having a bifurcated endadapted to engage a. sauf; a plunger in the member; a tooth bit Withinthe biturcated end and carried by said plunger, said member having meansfor guiding said tooth bit; resilient means for maintaining said plungerin a predetermined position; and means for varying the length of theplungers motion.

3. In a device oi" the class described, a member having a bifurcated endadapted to engage a saw; a tooth bit in the bifurcated end mounted tomove therein; means for maintaining said bit in a predeterminedposition; and means for adjusting the movement of said bit substantiallyas and for the purpose set forth.

4E. In a device of the class described, a member having a bifurcatedend, said bifurcated end having alining slots adapted to engage a sawand alining apertures adapted to receive a file; a plunger in saidmember; a tooth bit Within said bifurcated end in alinement with theslots and carried by said plunger; a resilient member for maintainingsaid plunger in a normal position; and means on said plunger coactingWith said member whereby the displacement ot' said plunger may bevariel.

5. ln a device of the class described, a member having a bifurcated end,said end having alining slots adapted to receive a saw and aliningapertures in said slots adapted to receive a tile, said member having acentral bore the axis ot' which is in a plane with the alining slots; aplunger in said bore; a tooth bit Within said bifurcated end inalinement With said slots and secured to said plunger, said tooth bitbeing formed of a blank the edges of which are slit forming teethalternately deflected in opposite direc tions, said member having arecess for guiding said tooth bit; a coil spring in said bore; a ring onsaid plunger engaging said coil spring; and a nut threaded to saidplunger and whereby the length of motion of said plunger with the bitmay be varied, substantially as and for the purpose set forth.

In testimony whereof l have signed my name to this specification in thepresence of two subscribing Witnesses.

P. C. TONER.

Copies m. this patent may be obtained for ve cents each, by addressingthe Commissioner ci Patente,

4 Washington. D. 0.

